com.globusltd.recyclerview.datasource

Class DatasourceObservable

java.lang.Object

com.globusltd.recyclerview.util.Observable<DatasourceObserver>

com.globusltd.recyclerview.datasource.DatasourceObservable

@MainThread
public class DatasourceObservable
extends Observable<DatasourceObserver>

DatasourceObservable provides methods for registering, unregistering and dispatching data changes in the datasources to the registered DatasourceObservers.

Field Summary

Fields inherited from class com.globusltd.recyclerview.util.Observable

mObservers

Constructor Summary

Constructors

Constructor and Description
DatasourceObservable()

Method Summary

Modifier and Type	Method and Description
void	notifyChanged() Notifies the registered observers that the data in the datasource have been changed.
void	notifyItemMoved(int fromPosition, int toPosition) Notifies the registered observers that the data have been moved to the another position in the datasource.
void	notifyItemRangeChanged(int positionStart, int itemCount, Object payload) Notifies the registered observers that the data in the datasource have been changed.
void	notifyItemRangeInserted(int positionStart, int itemCount) Notifies the registered observers that the new data have been inserted to the datasource.
void	notifyItemRangeRemoved(int positionStart, int itemCount) Notifies the registered observers that the data have been removed from the datasource.

Methods inherited from class com.globusltd.recyclerview.util.Observable

hasObservers, registerObserver, unregisterAll, unregisterObserver

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DatasourceObservable

public DatasourceObservable()

Method Detail

notifyChanged

public void notifyChanged()

Notifies the registered observers that the data in the datasource have been changed. Note that method can be called multiple times.

notifyItemRangeChanged

public void notifyItemRangeChanged(int positionStart,
                                   int itemCount,
                                   @Nullable
                                   Object payload)

Notifies the registered observers that the data in the datasource have been changed. Note that method can be called multiple times.

Parameters:

positionStart - Position of the first data item that has changed.

itemCount - Number of the data items that have changed.

payload - Optional parameter, use null to identify a "full" update.

notifyItemRangeInserted

public void notifyItemRangeInserted(int positionStart,
                                    int itemCount)

Notifies the registered observers that the new data have been inserted to the datasource. Note that method can be called multiple times.

Parameters:

positionStart - Position of the first data item that was inserted.

itemCount - Number of the data items inserted.

notifyItemRangeRemoved

public void notifyItemRangeRemoved(int positionStart,
                                   int itemCount)

Notifies the registered observers that the data have been removed from the datasource. Note that method can be called multiple times.

Parameters:

positionStart - Position of the first data item that was removed.

itemCount - Number of the data items removed.

notifyItemMoved

public void notifyItemMoved(int fromPosition,
                            int toPosition)

Notifies the registered observers that the data have been moved to the another position in the datasource. Note that method can be called multiple times.

Parameters:

fromPosition - Previous position of the data item.

toPosition - New position of the data item.